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Growing Degree Day Data for Chatfield at South Platte Reservoir (CHT01)
Station: Chatfield at South Platte Reservoir
Location: 1.2 mi north of Chatfield Res
Lat: 39.57 °N Lon: -105.1 °E Elev: 5414 ft
Irrigation: dry First obs: Dec 4, 2019 14:00
Lat: 39.57 °N Lon: -105.1 °E Elev: 5414 ft
Irrigation: dry First obs: Dec 4, 2019 14:00
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |
|---|---|---|---|
| 04/01/2026 | 3.3 | 3.3 | 6.6 |
| 04/02/2026 | 14.6 | 11.2 | 14.4 |
| 04/03/2026 | 16.5 | 1.9 | 20.3 |
| 04/04/2026 | 23.0 | 6.5 | 29.5 |
| 04/05/2026 | 32.2 | 9.2 | 40.1 |
| 04/06/2026 | 41.8 | 9.6 | 45.7 |
| 04/07/2026 | 53.8 | 12.0 | 53.2 |
| 04/08/2026 | 65.3 | 11.6 | 62.2 |
| 04/09/2026 | 76.3 | 11.0 | 70.1 |
| 04/10/2026 | 82.3 | 6.0 | 78.3 |
| 04/11/2026 | 96.1 | 13.8 | 88.7 |
| 04/12/2026 | 109.1 | 13.0 | 102.1 |
| 04/13/2026 | 120.7 | 11.6 | 114.5 |
| 04/14/2026 | 124.7 | 4.0 | 120.7 |
| 04/15/2026 | 133.6 | 8.9 | 127.6 |
| 04/16/2026 | 147.4 | 13.8 | 136.7 |
| 04/17/2026 | 148.7 | 1.4 | 145.0 |
| 04/18/2026 | 152.7 | 4.0 | 151.3 |
| 04/19/2026 | 164.2 | 11.5 | 161.0 |
| 04/20/2026 | 178.7 | 14.5 | 171.0 |
| 04/21/2026 | 194.4 | 15.7 | 180.5 |
| 04/22/2026 | 211.7 | 17.3 | 191.6 |
| 04/23/2026 | 218.8 | 7.1 | 197.5 |
| 04/24/2026 | 231.2 | 12.4 | 205.5 |
| 04/25/2026 | 233.8 | 2.6 | 213.0 |
| 04/26/2026 | 236.1 | 2.2 | 222.0 |
| 04/27/2026 | 237.1 | 1.1 | 231.6 |
| 04/28/2026 | 240.8 | 3.7 | 238.6 |
| 04/29/2026 | 244.7 | 3.8 | 247.3 |
| 04/30/2026 | 244.7 | 258.9 | |
| 05/01/2026 | 250.8 | 6.1 | 269.5 |
| 05/02/2026 | 262.2 | 11.3 | 277.9 |
| 05/03/2026 | 273.8 | 11.6 | 289.3 |
| 05/04/2026 | 285.3 | 11.5 | 297.7 |
| 05/05/2026 | 285.3 | 307.2 | |
| 05/06/2026 | 285.3 | 316.6 | |
| 05/07/2026 | 294.0 | 8.7 | 326.6 |
| 05/08/2026 | 303.8 | 9.8 | 336.0 |
| 05/09/2026 | 317.2 | 13.3 | 345.8 |
| 05/10/2026 | 327.9 | 10.7 | 354.0 |
| 05/11/2026 | 345.7 | 17.8 | 366.3 |
| 05/12/2026 | 362.1 | 16.4 | 376.9 |
| 05/13/2026 | 380.2 | 18.1 | 390.7 |
| 05/14/2026 | 405.0 | 24.8 | 403.7 |
| 05/15/2026 | 423.1 | 18.1 | 414.6 |
| 05/16/2026 | 436.3 | 13.2 | 426.1 |
| 05/17/2026 | 444.9 | 8.6 | 439.0 |
| 05/18/2026 | 444.9 | 450.4 | |
| 05/19/2026 | 445.9 | 1.0 | 461.1 |
| 05/20/2026 | 448.7 | 2.8 | 472.8 |
| 05/21/2026 | 459.4 | 10.7 | 485.0 |
| 05/22/2026 | 467.3 | 7.9 | 495.4 |
| 05/23/2026 | 480.7 | 13.4 | 508.4 |
| 05/24/2026 | 496.6 | 15.9 | 517.8 |
| 05/25/2026 | 513.7 | 17.1 | 528.8 |
| 05/26/2026 | 530.0 | 16.3 | 541.9 |
| 05/27/2026 | 541.9 | 11.9 | 556.0 |
| 05/28/2026 | 557.7 | 15.8 | 570.5 |
| 05/29/2026 | 577.0 | 19.3 | 585.6 |
| 05/30/2026 | 598.2 | ||
| 05/31/2026 | 609.8 | ||
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |